Mohan looks at a tree top and the angle made is 45°. He moves 10 cm back and ag

Question

Mohan looks at a tree top and the angle made is 45°. He moves 10 cm back and again looks at the tree top but this time angle made is 30°. How high is the tree top from ground?

Options:

A . $$\frac{{10}}{{\sqrt 3 + 1}}\,{\text{cm}}$$

B . $$20\sqrt 3 \,{\text{cm}}$$

C . $$20\,{\text{cm}}$$

D . $$\frac{{10}}{{\sqrt 3 - 1}}\,{\text{cm}}$$

Answer: Option D

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